Kerry Back
\[P_t / (P_{t-1}-D_t)\]
which is not exactly but is close enough to
\[(P_t + D_t)/P_{t-1}\]
from pandas_datareader import DataReader as pdr
data = pdr('cvx', 'yahoo', start=2010)
price = data['Adj Close']
ret = price.pct_change()
ret.plot()import quandl
quandl.ApiConfig.api_key = "" # paste api key between quote marks
data = quandl.get_table(
'SHARADAR/DAILY',
ticker="CVX",
qopts={"columns":["date", "pe"]})
data.set_index("date").plot()